Malvern Group, which owns Superbreak and LateRooms, has announced that it has gone into administration.
Aashna Shroff, personal finance editor at money.co.uk, comments: "This year is rapidly turning into the summer from hell for British holidaymakers, and the torrent of bad news keeps coming. "A perfect storm of airline and airport strikes, a volatile pound and travel companies going bust is not the ideal recipe for a relaxing break. "Brits face long queues at the airports, potentially higher costs while away, and now many will be worried that they won't be going away at all. "Rather than looking forward to some much needed sunshine, this latest news leaves a dark cloud over many peoples' plans. "The best thing consumers can do now is to contact their travel providers and to look at the ABTA website for advice as they are doing their best to keep travellers updated on developments."